/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2003 CaH4e3
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "mapinc.h"

#define rom_sw mapbyte1[0]

void Mapper230_Reset(void) {
	rom_sw ^= 1;     //1 - rom_sw;

	if (rom_sw) {
		ROM_BANK16(0x8000, 0);
		ROM_BANK16(0xc000, 7);
	} else {
		ROM_BANK16(0x8000, 8);
		ROM_BANK16(0xc000, 39);
	}
	MIRROR_SET2(1);
}

static DECLFW(Mapper230_write) {
	if (rom_sw) {
		ROM_BANK16(0x8000, V & 0x07);
	} else {
		if (V & 0x20) {
			ROM_BANK16(0x8000, (V & 0x1F) + 8);
			ROM_BANK16(0xc000, (V & 0x1F) + 8);
		} else {
			ROM_BANK32(((V & 0x1E) >> 1) + 4);
		}
		MIRROR_SET2(((V & 0x40) >> 6));
	}
}

void Mapper230_init(void) {
	ROM_BANK16(0x8000, 0);
	ROM_BANK16(0xc000, 7);
	SetWriteHandler(0x8000, 0xffff, Mapper230_write);
	MapperReset = Mapper230_Reset;
	rom_sw = 1;
}

